Double-frequency English letter type dipole antenna

A technology of dipole antennas and English letters, which is applied to antennas, devices that enable antennas to work in different bands at the same time, and the structural form of radiating elements, to achieve the effects of small size, simple manufacturing process, and simple structure

Inactive Publication Date: 2011-04-06
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the application of the "MADE IN CHINA" logo commonly used in Chinese products to the design of dual-frequency dipole antennas, and to the 940MHz-960MHz frequency band and 2.45GHZ operating frequency in RFID systems.

Method used

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  • Double-frequency English letter type dipole antenna
  • Double-frequency English letter type dipole antenna
  • Double-frequency English letter type dipole antenna

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0023] see figure 1 , the embodiment of the present invention is provided with double-sided copper-plated FR4 substrate 1, one side of the substrate 1 is provided with a copper-plated layer, and its copper-plated layer is the letter corresponding to the English translation "MADE IN CHINA" of "Made in China" to form an antenna radiation SMD, size: length 124mm±10mm, width 40mm±5mm, thickness 1.5mm±0.7mm. The two arms of the dipole antenna are composed of the English letters MADE IN CHINA. There is a disconnection gap on the connection between the letters N and C, and antenna feed points are set on both sides of the disconnection gap.

[0024] Table 1 shows the influence of the manufacturing process error on the characteristics of the antenna according to the present invention.

[0025] Table 1

[0026]

[0027] Note: 1. The data in the table has some red...

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Abstract

The invention discloses a double-frequency English letter type dipole antenna, relates to a dipole antenna, and provides the double-frequency English letter type dipole antenna which works at an ultra high frequency (UHF) range of a radio frequency identification device (RFID), has the frequency of 940 to 960 MHz, high applicability, low return loss and omnidirectional radiation characteristic. The antenna is provided with a substrate; and a copper-plated layer is arranged on one side of the substrate and is an aerial radiation sheet consisting of English letters. The antenna has a small size and good radiation characteristic, and the double-frequency working band comprises a first working frequency range and a second working frequency range, wherein the first working frequency range is between 940 and 1,000 MHz and the absolute bandwidth is 60 MHz; and the second working frequency range is between 2.43 and 2.46 GHz and the absolute bandwidth is 30 MHz. The size of the antenna is 75 percent of that of the conventional dipole antenna, and the physical dimension of an RFID antenna is reduced to a certain extent. The antenna also has the advantages of simple structure and manufacturing process, low cost, excellent omnidirectional radiation characteristic and the like, is easy to integrate and can fully meet the specific requirements on the antenna in an RFID application system.

Description

technical field [0001] The invention relates to a dipole antenna, in particular to a double-frequency English letter type dipole antenna. Background technique [0002] (1) RFID [0003] RFID (Radio Frequency Identification) is one of the top ten important technologies in the 21st century. Since 1937, RFID technology was developed by the U.S. Naval Research Laboratory (NRL) to identify allied aircraft. It is widely used in logistics because of its small size, large capacity, long life, reusable, fast reading and writing, non-visual identification, mobile identification, multi-target identification, positioning and long-term tracking management. In 2005, Wal-Mart Department Store applied RFID technology to electronic commodity labels, and in March 2007, nearly 20 research institutions including the United States, Germany, Italy, China, and South Korea established The Global outside the framework of EPC Global RF LabAlliance (GRFLA) has strongly promoted the successful applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q5/01G06K17/00H01Q5/10
Inventor 周建华罗勇游佰强胡秀丽王菁
Owner XIAMEN UNIV
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